LONDON (Reuters) - Thiago Silva's extra-time header sent Paris St Germain into the Champions League quarter-finals on away goals after they overcame the sending-off of talisman Zlatan Ibrahimovic to secure a brave 2-2 draw with Chelsea on Wednesday.

PSG, who had striker Ibrahimovic dismissed after 31 minutes, went through after the two sides battled to a 3-3 draw over the two legs of their last-16 tie.

The deciding goal was headed home in the 114th minute by Thiago Silva, who redeemed himself after he had given away the penalty nine minutes earlier that put Chelsea 2-1 ahead by handling a high cross.

Eden Hazard coolly converted that spot kick in the 95th minute which looked like settling a fiery tie that threatened to boil over several times, but also had plenty of good football.

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"The opponent was stronger than us, they coped better with the pressure of the games. Because they had 10 men we felt more the pressure of winning and they had nothing to lose.

"We couldn't cope with that, we concede two goals in two set pieces, that is difficult to accept."

The pendulum seemed to swing Chelsea's way when Ibrahimovic saw red for a clumsy challenge on Chelsea midfielder Oscar, but the visitors never gave up the fight against the side that knocked them out at the quarter-final stage last year.